Lyn,
You are correct. I should know better than posting late in the evening after a 12 hour drive!
The "lazy" Crown/N appeared with the M1908, not the M1906 and probably, as Dwight notes in his data base, around 1912. The production of the 1908 Commercial continued until the 1913/14 Commercials with the stock lug were introduced at somewhere around the 7XXXX range. So you can see that both types of proof marks were used during the M1908 production and probably with some overlap.